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balu736 [363]
3 years ago
14

Why are the solutions to the proportions 40/8 = x/10 and x/40 = 10/8 the same?

Mathematics
2 answers:
Finger [1]3 years ago
8 0

Answer:

b .

tha answer is b !

romanna [79]3 years ago
4 0

Answer:

Both proportions are equivalent.

Step-by-step explanation:

We have been given two proportions \frac{40}{8}=\frac{x}{10} and \frac{x}{40}=\frac{10}{8}. We are asked to find why the solutions to our given proportions are equal.

We can solve proportions by cross multiplying them.

After cross multiplying our both proportions we will get same equation that is:

40*10=8*x

400=8x

8*x=40*10

8x=400

Since we get same equation after cross multiplying both proportions, therefore, the solutions to the given proportions would be same.

You might be interested in
Perimeter and area of a rectangle 11 cm by 19.3cm
Dovator [93]

Answer:

Perimeter: 60.6cm

Area: 212.3cm

Step-by-step explanation:

When calulating the perimeter, you are adding the length of all the sides together. Since the figure is a rectangle, two two pairs of sides will be different lengths. Solving is as follows:

P= 11+11+19.3+19.3 or P=11(2)+19.3(2) =60.6

With area, you need the total amount of mass, so you would multiply two sides. In this case, the two are 11cm and 19.3cm.

A= 11(19.3)cm =212.3

6 0
4 years ago
5 + 4x - 2x = 8x + 11 + 12<br><br> Explain step by step PLEASE
Yuliya22 [10]

Answer:

The solution is x = -3

Step-by-step explanation: Please brainliest!

4 0
3 years ago
Read 2 more answers
Can someone answer this and show the work​
eduard

Answer:

.45 miles

Step-by-step explanation:

27 mph - How many miles per minute

We already know that there are 60 seconds in an hour. So the best thing to do in this situation is to divide the miles per minute.

27/60 = 0.45

.45 miles per minute

As a fraction, your answer would be 9/20

3 0
3 years ago
HELPPPPPP ASAP What is the length of the third side of the window frame below? (5 points) (Figure is not drawn to scale.) 58a 1)
ollegr [7]

Answer:

The answer is 3) 40.

Step-by-step explanation:

since you're working with the Pythagorean theorem, you should know that a^2+b^2=c^2, therefore, we know that we only have two sides. we have a and c. we know that a = 42 and c = 58, giving us the equation of 42^2+b^2=58^2,

we want to find b!

so we would simply subtract the two.

58^2 - 42^2 = b

b = 1600

now we want to square root,

b = sqrt1600

which in the end, gives us the answer of 40.

4 0
3 years ago
What is the solution to the equation -0.2(x - 20) = 44 - x? x = -90 x = 50 x = -50 x = 90
Arturiano [62]

Answer:

x= 50

Step-by-step explanation:

First, simplify the equation

Expand the terms on the left hand side to make it easier to rearrange

   -0.2(x-20) =44-x

   -0.2x+4 =44-x

Rearrange the equation by moving the numbers to one side and the variables to the other

   -0.2x +x= 44-4

    0.8x = 40

Isolate for x

    x= 40/0.8

    x= 50

6 0
4 years ago
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